DL350 Hydraulic Rock Splitter for Underground Marble Tunnel Excavation

Project Overview
A marble mine operator faced a tough bottleneck on underground tunnel works. The tunnel cross-section was only 1.6m ×1.8m. Medium-strength marble rock with 80–120 USC compressive strength resisted handheld jackhammers completely. Large excavators could not fit inside the narrow drift. Local authorities imposed strict blasting regulations, and explosive approval cycles dragged on for months. The project stalled, labour costs kept rising, and the owner worried about missed production targets.

Customized Solution
We worked closely with the mine owner to understand site constraints before recommending equipment. Since heavy machinery was ruled out, we selected the portable DL350 hydraulic rock splitter. The handheld splitter weighs 35kg, easy to carry and deploy in confined underground spaces. We supplied one diesel power station paired with six DL350 splitting cylinders. The working plan required creating a free face with minimum 40cm depth. Drilling pattern: hole spacing at 50cm, hole depth 70cm. We advised operators to drill and split along marble’s natural rock veins to achieve clean fractures and intact marble blocks.

Field Results
Static hydraulic splitting along pre-defined fracture lines delivered stable, controlled rock breaking. Compared with jackhammer work, productivity improved sharply. The team achieved 5–6 meters of tunnel advance per working day. The mine owner eliminated reliance on explosives and removed long waiting periods for permit approvals. The marble split neatly along its bedding planes, preserving high-value large blocks and cutting waste. The client was relieved to restart tunnel excavation without vibration or flying debris.

Conclusion
DL350 hydraulic rock splitters offer a safe, blast-free static breaking option for narrow underground tunnelling, marble quarrying and confined rock clearance. It fits small drifts where heavy plant cannot access, delivers predictable rock separation and protects valuable stone blocks.If you have the same trouble,welcome to comtact us.We are willing to communicate with you in details,and provide customized sheme.